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Show Light Bulb System Hastens Vegetables Speed Up Development In Backyard Hotbeds Burn 25-watt light bulbs in a backyard hotbed and you'll eat your own early June peas next May. That advice for home gardeners comes from Robert L. Zahour, Westinghouse lamp engineer. Such miniature "greenhouses" warmed by low-power bulbs hurry vegetables vege-tables to the table 10 days ahead oi regular seed plantings outdoors. Flower seeds started in hotbeds are brought to bloom one month earlier, he added. The 25-watt bulb is best for hotbeds hot-beds because higher wattage bulbs are more apt to create hot spots in Seedlings coddled In electric hotbeds like these hurry vegetables vege-tables to the table 10 days earlier earl-ier and bring: flowers to bloom a month earlier. the soli, stunting seed growth or scorching the tender young plants. The cost of a bulb-heated hotbed averages only three-tenths of a cent per plant for electricity during dur-ing the entire six-weeks season in northern United States, the engineer engi-neer calculated. This is 30 per cent less than the cost of soil heated by pleetric pable and only half the post of manure. Manure, which requires re-quires soil preparation such a digging into frozen ground, depends upon fermentation for its heating effect In' a hotbed. i . |